Air freight winch with transfer fixing device

Abstract

The invention belongs to the field of air freight, and particularly relates to an air freight winch with a transfer fixing device. An air freight winch is fixedly installed in an aircraft cargo hold through screws, the operation process is complex, and the use efficiency is low. The quick-release lock is adopted to realize quick connection and fixation of the air freight winch and the aircraft floor slide rail, the liftable front and rear auxiliary rollers are adopted to realize quick movement of the air freight winch on the floor slide rail, and the transfer handle is quickly connected with the air freight winch through the quick-release pin, so that quick movement and transfer of the winch in a cargo hold can be realized; the problem that the winch is transferred in the cargo hold by means of special hoisting equipment is solved, the requirements for rapid installation and use of the winch in different positions in the cargo hold are met, operation is easy and rapid, and the working efficiency of operators is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of air cargo transportation, and in particular relates to an air cargo winch with a transfer fixing device, which is used for realizing rapid transfer, movement, installation and fixing of the air cargo winch in an aircraft cargo hold. Background Art

[0002] At present, aviation cargo winches are fixed and installed with screws in the aircraft cargo hold. It is difficult to carry heavy winches manually, and special lifting equipment is generally required to move and transfer the winches in the hold. The operation process is complicated and the efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to provide an aviation cargo winch which can be quickly transported, moved, installed and fixed in the aircraft cargo hold.

[0004] The present invention provides an aviation cargo winch with a transfer fixing device, which is used in conjunction with an aircraft floor slide rail, wherein the aircraft floor slide rail comprises a sinking track, an interval closing structure and a positioning pin hole, and the aviation cargo winch comprises a quick release lock, a limit rod, a rear auxiliary roller, a front auxiliary roller, a transfer handle and a winch body, wherein a pair of front auxiliary rollers and a rear auxiliary roller are installed on the winch body, and the front auxiliary rollers and the rear auxiliary rollers can be raised and lowered relative to the winch body; a detachable transfer handle is provided at the front end of the winch body; and the quick release lock and the limit rod are installed on both sides of the winch body;

[0005] The quick-release lock cooperates with the positioning pin hole to limit the position in the plane, including an annular shell installed on the winch body, the annular shell has a slide groove, which includes an axial long slide groove, a circumferential slide groove and an axial short slide groove that are connected in sequence; the lower shaft head of the lock shaft passes through the through hole of the annular shell, and the middle part has a disc structure with a radial cylindrical pin, the cylindrical pin moves along the slide groove, the upper shaft head has an external spline and an internal threaded hole, the lower end of the spring is supported on the inner bottom surface of the shell, and the upper end abuts the disc structure; the handwheel has an axial hole with an H-shaped cross-section, the lower shaft hole has an internal spline that cooperates with the external spline, and the handwheel and the lock shaft are connected by screws;

[0006] The limiting rod comprises an integrated threaded rod, a flat shaft and a limiting plate, which is fixed to the winch body through the threaded rod. The limiting plate can be moved to the bottom of the closing structure to limit in the vertical direction.

[0007] Advantageously, the annular housing has a mounting base on its lower side and a mounting flange on its upper side.

[0008] Advantageously, a cover plate with a through hole is installed on the upper end surface of the annular housing, and the lower end of the hand wheel passes through the cover plate and is connected to the lock shaft.

[0009] Advantageously, the lower shaft head diameter matches the size of the locating pin hole of the floor rail.

[0010] Advantageously, the transport handle is a connecting rod structure with connecting ears on the side, and a fixed connection is achieved by a quick-release pin.

[0011] Advantageously, the transport handle is a two-section pull rod that can be rotated and folded around a rotation axis.

[0012] Advantageously, the structures of the front auxiliary roller and the rear auxiliary roller both include a roller bracket, a roller assembly, a screw and a lifting frame. The roller bracket is fixedly connected to the winch body, and has a threaded hole in which a screw is provided. The lower end of the screw is rotatably connected to the lifting frame, and the roller assembly is installed in the lifting frame.

[0013] Advantageously, the air cargo winch is lifted by the front auxiliary rollers and the rear auxiliary rollers and then transported. When the transport is in place, the air cargo winch is lowered to a certain height by the front auxiliary rollers and the rear auxiliary rollers, and the limit plate of the limit rod is inserted into the sinking track; after moving a certain distance along the sinking track, the limit plate is stuck under the closing structure, and after aligning the lower shaft head and the positioning pin hole, the air cargo winch continues to be lowered, and finally the quick-release lock is pressed down and inserted into the positioning pin hole, and the cylindrical pin is rotated to the axial short slide groove position and then locked.

[0014] Beneficial effects: The present invention adopts a quick-release lock to achieve rapid connection and fixation between the air cargo winch and the aircraft floor slide rail, adopts liftable front and rear auxiliary rollers to achieve rapid movement of the air cargo winch on the floor slide rail, and the transfer handle is quickly connected to the air cargo winch through a quick-release pin, which can achieve rapid movement and transfer of the winch in the cargo hold, solves the problem of needing to rely on special lifting equipment to achieve the transfer of the winch in the cargo hold, meets the needs of rapid installation and use of the winch at different positions in the cargo hold, is simple and quick to operate, and greatly improves the work efficiency of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the aviation cargo winch of the present invention being fixed on the aircraft floor slide rail;

[0016] Figure 2 It is a structural diagram of a quick release lock;

[0017] Figure 3 is a cross-sectional view of a quick release lock;

[0018] Figure 4 It is a schematic diagram of the structure of the limit rod;

[0019] Figure 5 is a schematic diagram of the structure of the rear auxiliary roller;

[0020] Figure 6 This is a schematic diagram of an aircraft floor slide.

[0021] 1-quick release lock, 2-limit rod, 3-rear auxiliary roller, 4-front auxiliary roller, 5-transport handle, 6-quick release pin, 7-winch body, 1-1-housing, 1-2-lock shaft, 1-3-cover plate, 1-4-handwheel, 1-5-spring, 1-6-screw, 1-7-cylindrical pin, 1-1-1-mounting base, 1-1-2-mounting flange, 1-1-3-slide, 2-1-threaded rod, 2-2 flat shaft, 2-3-limit plate, 3-1-roller bracket, 3-2-roller assembly, 3-3-screw, 3-4-lifting frame DETAILED DESCRIPTION

[0022] like Figure 1 The embodiment of the aviation cargo winch with a transfer fixing device shown in the figure has a main structure including a quick-release lock 1, a limit rod 2, a rear auxiliary roller 3, a front auxiliary roller 4, a transfer handle 5, a quick-release pin 6 and a winch body 7.

[0023] The quick release lock 1 is composed of a shell 1-1, a lock shaft 1-2, a cover plate 1-3, a handwheel 1-4, a spring 1-5, a screw 1-6 and a cylindrical pin 1-7; the shell 1-1 is a cylindrical structure, and a mounting base 1-1-1 is provided on the outer wall on one side, which is fixedly connected to the bottom plate of the air cargo winch by screws, and a mounting flange 1-1-2 is provided on the outer wall on the other side, which is connected to the cover plate 1-3 by screws. A step hole is provided on the inner side of the shell 1-1, and the step hole with a smaller aperture is located on the mounting base 1-1-1. A slide groove 1-1-3 is opened on the outer wall of the cylinder, which includes a connected axial long slide groove, a circumferential slide groove and an axial short slide groove.

[0024] The lock shaft 1-2 is a stepped shaft, which is installed in the inner cavity of the shell 1-1 and the cover plate 1-3. The lower end of the lock shaft 1-2 is the lower shaft head, which can extend out of the bottom plate of the air cargo winch and move up and down along the through hole on the bottom plate of the air cargo winch. The diameter of the lower shaft head matches the size of the circular hole of the floor slide rail. The upper end of the lock shaft 1-2 is the upper shaft head, which has an external spline and an internal threaded hole. A disc structure is provided in the middle of the stepped shaft. One end of the spring 1-5 is supported on the inner bottom surface of the shell 1-1, and the other end is supported on the disc structure.

[0025] The hand wheel 1-4 has an inner hole with an H-shaped cross section and an axial through hole. The upper end is in the shape of a handle and the lower end has a spline hole. The outer spline of the upper end of the lock shaft 1-2 is combined with the spline hole to achieve circumferential limit. The screw 1-6 passes through the axial through hole and is connected to the threaded hole of the lock shaft 1-2. A cylindrical pin 1-7 is installed on the annular surface of the disc structure. The outer end of the cylindrical pin 1-7 is embedded in the slide groove 1-1-3. The lock pin 1-2 is covered with a spring 1-5. The cylindrical pin 1-7 can move in the slide groove 1-1-3. After pressing down, rotating the hand wheel 1-4 can drive the cylindrical pin 1-7 to rotate into the circumferential part of the slide groove 1-1-3. Under the action of the spring force, the axial short slide groove limits the cylindrical pin 1-7.

[0026] The cover plate 1-3 is a plate structure with a through hole in the middle and mounting ears arranged in the circumferential direction, and is connected to the mounting flange 1-1-2 through the mounting ears.

[0027] The limit rod 2 is a stepped shaft structure, with a threaded rod 2-1 at the upper end, a flat shaft 2-2 in the middle, and a limit plate 2-3 adapted to the diameter and cross-section of the circular hole of the floor slide rail at the lower end. The limit shaft 2 is fixedly mounted on the bottom plate of the aviation cargo winch through the threaded rod 2-1 and the flat shaft 2-2, and the limit plate 2-3 extends downward from the winch bottom plate.

[0028] The transport handle 5 is a connecting rod structure with connecting ears on the side, which can be installed in contact with the front end of the air cargo winch and fixedly connected by the quick release pin 6. In order to solve the problem of storing the transport handle 5 on the plane, the pull rod and the base in the transport handle 5 are set to be split, and quickly installed by the quick release pin. The pull rod is a two-section pull rod that can be rotated and folded around the rotating axis, which is convenient for storage and storage. When in use, the pull rod is quickly connected by the ears and the quick release pin.

[0029] The rear auxiliary roller 3 and the front auxiliary roller 4 have the same structure, and are both composed of a roller bracket 3-1, a roller assembly 3-2, a screw 3-3 and a lifting frame 3-4. The roller bracket 3-1 has mounting end faces at both ends, and a threaded hole is provided in the middle. The screw 3-3 is installed in the internal thread of the roller bracket 3-1. The mating thread adopts a tooth profile with a self-locking function. The mating threads on the roller bracket 3-1 and the screw 3-3 can adopt a trapezoidal thread with its own function. The lower end of the screw 3-3 is connected to the lifting frame 3-4 for relative rotation, and the roller assembly 3-2 is installed at the lower end of the lifting frame 3-4. The front auxiliary roller 4 and the rear auxiliary roller 3 can be set as roller structures with universal adjustment and unidirectional locking.

[0030] Transfer process: When transfer is required, the transfer handle 5 is quickly fixed to the front end of the winch through the mounting ear and quick-release pin 6 thereon, and the roller lowering operation is completed by rotating the screw 3-3 on the front auxiliary roller 4 and the rear auxiliary roller 3, and the winch is lifted and switched to the transfer state. The winch can be transferred in the cabin through the pull rod on the transfer handle 5, without the need for special equipment and tools, and is easy to operate. The front auxiliary roller 4 is a universal wheel structure, which is convenient for position adjustment during operation. At the same time, a two-way brake is provided on the front auxiliary roller 4. During the transfer of the winch, the brake can be quickly braked by stepping on the brake to ensure the safety of the transfer.

[0031] Shutdown process: After the air cargo winch is transferred to the designated location, the rollers are raised by rotating the screws 3-3 on the front auxiliary rollers 4 and the rear auxiliary rollers 3, so that the rollers are off the ground and the winch is placed at the designated location, completing the winch transfer work.

[0032] Unlocking process: Press and rotate the hand wheel 1-4 in the unlocking direction so that the cylindrical pin 1-7 enters the axial long groove. At this time, the lock shaft 1-2 retracts into the housing 1-1 under the action of the spring force, completing the opening operation of the quick release lock 1. According to this operation, all quick release locks 1 are switched to the unlocking state.

[0033] Alignment adjustment method: transport the winch to the vicinity of the installation location, adjust the screw 3-3 to adjust the roller to a suitable height, ensure that the lower surface of the limit plate 2-3 is slightly higher than the aircraft floor rail, and then adjust the position of the winch to ensure that the limit plates 2-3 on all limit rods 2 are aligned with the circular holes of the floor rail. Rotate the screw 3-3 to lower the winch to a certain height to ensure that the limit plates 2-3 on all limit rods 2 fall into the circular holes of the floor rail. At this time, the winch has not completely fallen onto the floor rail. The winch can be moved forward and backward along the floor rail under the support of the roller to adjust its position.

[0034] Locking process: Move the winch along the floor rail for a distance to ensure that the lock shaft 1-2 is aligned with the round hole on the floor rail. At this time, the limit rod 2 slides into the narrow groove between the two round holes of the floor rail, and the limit plate 2-3 on the limit rod 2 is embedded in the narrow groove of the rail to achieve vertical limit of the winch. Press and rotate the hand wheel 1-4 in the locking direction so that the cylindrical pin 1-7 is limited in the axial short groove. At this time, the lock shaft 1-2 extends out of the housing 1-1 and falls into the round hole of the floor rail, completing the locking operation of the quick release lock 1. According to this operation, all quick release locks 1 are switched to the locked state to achieve quick installation and fixation of the winch.

[0035] The disassembly process of the aviation cargo winch is the opposite of the installation process.

[0036] When the winch needs to move on the floor slide rail, the front auxiliary roller 4 can be used instead of the transfer handle 5 for operation. There is no need to install the transfer handle 5, which greatly improves work efficiency.

Claims

1. An aviation cargo winch with a transfer fixing device, used in conjunction with an aircraft floor slide rail, the aircraft floor slide rail comprising a sinking track, a spaced closing structure and a positioning pin hole, characterized in that: The aviation cargo winch comprises a quick release lock (1), a limiting rod (2), a rear auxiliary roller (3), a front auxiliary roller (4), a transfer handle (5) and a winch body (7); a pair of front auxiliary rollers (4) and a rear auxiliary roller (3) are mounted on the winch body (7); the front auxiliary rollers (4) and the rear auxiliary rollers (3) can be raised and lowered relative to the winch body (7); a detachable transfer handle (5) is provided at the front end of the winch body (7); the quick release lock (1) and the limiting rod (2) are mounted on both sides of the winch body (7); The quick-release lock (1) cooperates with the positioning pin hole to limit position in the plane, and includes an annular shell (1-1) installed on the winch body (7), the annular shell (1-1) having a slide groove (1-1-3), which includes an axial long slide groove, a circumferential slide groove and an axial short slide groove that are connected in sequence; the lower shaft head of the lock shaft (1-2) passes through the through hole of the annular shell (1-1), and the middle part has a disc structure with a radial cylindrical pin (1-7), the cylindrical pin (1-7) moves along the slide groove (1-1-3), the upper shaft head has an external spline and an internal threaded hole, the lower end of the spring (1-5) is supported on the inner bottom surface of the shell (1-1), and the upper end abuts the disc structure; the hand wheel (1-4) has an axial hole with an H-shaped cross section, the lower shaft hole has an internal spline that cooperates with the external spline, and the hand wheel (1-4) and the lock shaft (1-2) are connected by a screw (1-6); The limiting rod (2) comprises an integrated threaded rod (2-1), a flat shaft (2-2) and a limiting plate (2-3), and is fixed to the winch body (7) via the threaded rod (2-1). The limiting plate (2-3) can be moved to the bottom of the closing structure to limit in the vertical direction.

2. The aviation cargo winch according to claim 1, characterized in that: The annular housing (1-1) has a mounting base (1-1-1) on the lower side and a mounting flange (1-1-2) on the upper side.

3. The aviation cargo winch according to claim 2, characterized in that: A cover plate (1-3) with a through hole is also installed on the upper end surface of the annular housing (1-1), and the lower end of the hand wheel (1-4) passes through the cover plate (1-3) and is connected to the lock shaft (1-2).

4. The aviation cargo winch according to claim 1, characterized in that: The lower shaft head diameter matches the size of the dowel pin hole in the floor rail.

5. The aviation cargo winch according to claim 1, characterized in that: The transport handle (5) is a connecting rod structure, with connecting ears provided on the side, and a fixed connection is achieved through a quick-release pin (6).

6. The aviation cargo winch according to claim 5, characterized in that: The transport handle (5) is a two-section pull rod that can be rotated and folded around a rotation axis.

7. The aviation cargo winch according to claim 1, characterized in that: The structures of the front auxiliary roller (4) and the rear auxiliary roller (3) both include a roller bracket (3-1), a roller assembly (3-2), a screw rod (3-3) and a lifting frame (3-4); the roller bracket (3-1) is fixedly connected to the winch body (7); a threaded hole is provided on the roller bracket (3-1) and a screw rod (3-3) is provided therein; the lower end of the screw rod (3-3) is rotatably connected to the lifting frame (3-4); and the roller assembly (3-2) is installed in the lifting frame (3-4).

8. The aviation cargo winch according to any one of claims 1 to 7, characterized in that: The air cargo winch is lifted by the front auxiliary roller (4) and the rear auxiliary roller (3) for transfer. When the transfer is in place, the air cargo winch is lowered to a certain height by the front auxiliary roller (4) and the rear auxiliary roller (3), and the limit plate (2-3) of the limit rod (2) is inserted into the sinking track; after moving a certain distance along the sinking track, the limit plate (2-3) is stuck under the closing structure, and after aligning the lower shaft head and the positioning pin hole, the air cargo winch continues to be lowered, and finally the quick release lock (1) is pressed down to be inserted into the positioning pin hole, and the cylindrical pin (1-7) is rotated to the axial short slide groove position and locked.

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